JavaScript Object Notation for Linked Data — the recommended wire format for Schema.org markup.
JSON-LD ships Schema.org markup in a `<script type="application/ld+json">` tag. Unlike microdata or RDFa, it doesn't wrap visible HTML — it sits alongside it, which is why it's trivially maintainable by a component-based site.
AI retrievers parse JSON-LD first because it's deterministic: one file = one entity graph. The rule of thumb for commerce: Organization on every page, Product on every PDP, FAQPage on every content page with ≥3 questions, BreadcrumbList on every non-root page.
A shared vocabulary maintained by Google, Microsoft, Yahoo, and Yandex for describing entities on the web.
Any markup that describes page content in a machine-readable format — most commonly JSON-LD using Schema.org types.
A JSON-LD block describing a specific product — name, SKU, price, availability, image, reviews.
A JSON-LD block listing question/answer pairs that AI assistants can lift as direct answers.